13686697 has 6 divisors (see below), whose sum is σ = 13906302. Its totient is φ = 13468032.

The previous prime is 13686689. The next prime is 13686713. The reversal of 13686697 is 79668631.

It can be written as a sum of positive squares in 3 ways, for example, as 4096 + 13682601 = 64^2 + 3699^2 .

It is not a de Polignac number, because 13686697 - 2³ = 13686689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13686397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 31393 + ... + 31825.

It is an arithmetic number, because the mean of its divisors is an integer number (2317717).

Almost surely, 2^13686697 is an apocalyptic number.

It is an amenable number.

13686697 is a deficient number, since it is larger than the sum of its proper divisors (219605).

13686697 is an frugal number, since it uses more digits than its factorization.

13686697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 939 (or 506 counting only the distinct ones).

The product of its digits is 326592, while the sum is 46.

The square root of 13686697 is about 3699.5536217225. The cubic root of 13686697 is about 239.2027772018.

The spelling of 13686697 in words is "thirteen million, six hundred eighty-six thousand, six hundred ninety-seven".